spectral
adjective uk/ˈspek.trəl/ us/ˈspek.trəl/
(GHOST)
鬼的，幽灵的;幽灵似的
coming from or seeming to be the spirit of a dead person
a spectral figure/presence 鬼魂
(COLOURS)
physics specialized光谱的，谱的
of the set of colours into which a beam of light can be separated
spectral light 光谱灯